From 704e04b108b2051583b2a9a8dcb728b6324170b7 Mon Sep 17 00:00:00 2001
From: Michael Fellinger <m.fellinger@gmail.com>
Date: Tue, 27 Jun 2017 22:11:17 +0200
Subject: [PATCH 1/2] dockerTools.buildImage: configurable timestamp

This way not all images have to be from 47 years ago, making it much easier to find the one you're looking for.
---
 pkgs/build-support/docker/default.nix | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pkgs/build-support/docker/default.nix b/pkgs/build-support/docker/default.nix
index 6bc9b7475e1..a3a4b605a6d 100644
--- a/pkgs/build-support/docker/default.nix
+++ b/pkgs/build-support/docker/default.nix
@@ -380,6 +380,8 @@ rec {
     runAsRoot ? null,
     # Size of the virtual machine disk to provision when building the image.
     diskSize ? 1024,
+    # Time of creation of the image.
+    created ? "1970-01-01T00:00:01Z",
   }:
 
     let
@@ -387,7 +389,7 @@ rec {
 
       # Create a JSON blob of the configuration. Set the date to unix zero.
       baseJson = writeText "${baseName}-config.json" (builtins.toJSON {
-        created = "1970-01-01T00:00:01Z";
+        created = created;
         architecture = "amd64";
         os = "linux";
         config = config;

From 54419f301633f1622b966f75dd07dcce2076e569 Mon Sep 17 00:00:00 2001
From: Michael Fellinger <m.fellinger@gmail.com>
Date: Tue, 27 Jun 2017 22:22:08 +0200
Subject: [PATCH 2/2] using inherited instead

---
 pkgs/build-support/docker/default.nix | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/pkgs/build-support/docker/default.nix b/pkgs/build-support/docker/default.nix
index a3a4b605a6d..4ebe3c0615d 100644
--- a/pkgs/build-support/docker/default.nix
+++ b/pkgs/build-support/docker/default.nix
@@ -389,10 +389,9 @@ rec {
 
       # Create a JSON blob of the configuration. Set the date to unix zero.
       baseJson = writeText "${baseName}-config.json" (builtins.toJSON {
-        created = created;
+        inherit created config;
         architecture = "amd64";
         os = "linux";
-        config = config;
       });
 
       layer =